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  2. Branched-chain amino acid - Wikipedia

    en.wikipedia.org/wiki/Branched-chain_amino_acid

    A branched-chain amino acid (BCAA) is an amino acid having an aliphatic side-chain with a branch (a central carbon atom bound to three or more carbon atoms). Among the proteinogenic amino acids, there are three BCAAs: leucine, isoleucine, and valine. [1] Non-proteinogenic BCAAs include 2-aminoisobutyric acid and alloisoleucine. Leucine ...

  3. Branched-chain keto acid dehydrogenase kinase deficiency

    en.wikipedia.org/wiki/Branched-chain_keto_acid...

    Branched-chain keto acid dehydrogenase kinase deficiency (BCKDK deficiency) is a disease resulting from mutations of the BCKDK gene. Patients with BCKDK deficiency have low levels of branched chain amino acids (BCAA) in their organism due to accelerated breakdown of these essential amino acids.

  4. Organic acidemia - Wikipedia

    en.wikipedia.org/wiki/Organic_acidemia

    The branched-chain amino acids include isoleucine, leucine and valine. [1] Organic acids refer to the amino acids and certain odd-chained fatty acids which are affected by these disorders. The four main types of organic acidemia are: methylmalonic acidemia, propionic acidemia, isovaleric acidemia, and maple syrup urine disease. [1]

  5. Maple syrup urine disease - Wikipedia

    en.wikipedia.org/wiki/Maple_syrup_urine_disease

    Maple syrup urine disease can be classified by its pattern of signs and symptoms or by its genetic cause. The most common and severe form of this disease is the classic type, which appears soon after birth, and as long as it remains untreated, gives rise to progressive and unremitting symptoms.

  6. Hypervalinemia - Wikipedia

    en.wikipedia.org/wiki/Hypervalinemia

    Hypervalinemia is a rare autosomal recessive metabolic disorder in which urinary and serum levels of the branched-chain amino acid valine are elevated, without related elevation of the branched-chain amino acids leucine and isoleucine. [2] [3] It is caused by a deficiency of the enzyme valine transaminase. [4]

  7. BCKDHA - Wikipedia

    en.wikipedia.org/wiki/BCKDHA

    The second major step in the catabolism of the branched-chain amino acids (isoleucine, leucine, and valine) is catalyzed by the branched-chain alpha-keto acid dehydrogenase complex (BCKD; EC 1.2.4.4), an inner-mitochondrial enzyme complex that consists of 3 catalytic components: a heterotetrameric (alpha2, beta2) branched-chain alpha-keto acid decarboxylase (E1), a homo-24-meric dihydrolipoyl ...

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  9. Aminoaciduria - Wikipedia

    en.wikipedia.org/wiki/Aminoaciduria

    In renal aminoaciduria, the renal tubules are unable to reabsorb the filtered amino acids back into the blood, causing high concentrations of amino acids in the urine. [5] This may be caused by a defect in the transport proteins in the renal tubule, for example, as occurs in Hartnup disease , [ 5 ] or may be due to damage to the kidney tubule ...